We seek to understand and document all radio transmissions, legal and otherwise, as part of the radio listening hobby. We do not encourage any radio operations contrary to regulations. Always consult with the appropriate authorities if you have questions concerning what is permissible in your locale.

Subject / Started by Last post
1 Replies
978 Views
Last post April 20, 2023, 0600 UTC
by nitroengine
0 Replies
2013 Views
Last post October 18, 2022, 2052 UTC
by kris
2 Replies
3926 Views
Last post March 22, 2019, 0421 UTC
by JimIO
3 Replies
860 Views
Last post March 26, 2024, 1954 UTC
by europirate
2 Replies
4847 Views
Last post December 18, 2015, 2039 UTC
by JoeFLIPS
2 Replies
1762 Views
Last post February 07, 2022, 1659 UTC
by Finman
0 Replies
3417 Views
Last post September 02, 2015, 1630 UTC
by ChrisSmolinski
2 Replies
3726 Views
Last post February 25, 2022, 0125 UTC
by ~SIGINT~
3 Replies
4811 Views
Last post August 25, 2015, 1959 UTC
by Token
MMSSTV updated

Started by NJQA

0 Replies
1374 Views
Last post May 13, 2020, 1415 UTC
by NJQA
5 Replies
3795 Views
Last post October 19, 2016, 2316 UTC
by ChrisSmolinski
1 Replies
2099 Views
Last post December 22, 2016, 2255 UTC
by Cornel
0 Replies
3618 Views
Last post October 01, 2014, 2359 UTC
by ChrisSmolinski
4 Replies
3563 Views
Last post December 04, 2015, 1648 UTC
by jFarley
0 Replies
1737 Views
Last post November 04, 2016, 2222 UTC
by ChrisSmolinski
0 Replies
1925 Views
Last post December 22, 2016, 0004 UTC
by ChrisSmolinski
3 Replies
4084 Views
Last post July 25, 2016, 0202 UTC
by IQ_imbalance
1 Replies
20441 Views
Last post August 09, 2019, 1536 UTC
by Josh
5 Replies
2307 Views
Last post September 14, 2018, 1936 UTC
by IQ_imbalance
1 Replies
2889 Views
Last post January 22, 2017, 1458 UTC
by ChrisSmolinski

 

Normal Topic
Hot Topic (More than 15 replies)
Very Hot Topic (More than 25 replies)

Locked Topic
Sticky Topic
Poll


HFUnderground T-Shirt
HFUnderground House Flag
by MitchellTimeDesigns